Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities [Line Items]
Amortized Costs	$ 187,395	$ 220,357
Gross Unrealized Gains	2,729	1,684
Gross Unrealized Losses	(1,438)	(5,401)
Estimated Fair Value	188,686	216,640
Amortized Costs	37,031	36,696
Estimated Fair Value	36,417
US Government Agencies Debt Securities [Member]
Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities [Line Items]
Amortized Costs	7,886	6,580
Gross Unrealized Gains	0
Gross Unrealized Losses	(99)	(316)
Estimated Fair Value	7,787	6,264
Obligations Of State And Political Subdivisions [Member]
Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities [Line Items]
Amortized Costs	54,447	60,370
Gross Unrealized Gains	1,316	672
Gross Unrealized Losses	(394)	(1,833)
Estimated Fair Value	55,369	59,209
Amortized Costs	37,031	36,696
Gross Unrealized Gains	344	36
Gross Unrealized Losses	(958)	(2,707)
Estimated Fair Value	36,417	34,025
Residential Mortgage Backed Securities and Collateralized Mortgage Obligations [Member]
Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities [Line Items]
Amortized Costs	45,522	64,026
Gross Unrealized Gains	532	318
Gross Unrealized Losses	(256)	(1,353)
Estimated Fair Value	45,798	62,991
Corporate Debt Securities [Member]
Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities [Line Items]
Amortized Costs	41,942	48,836
Gross Unrealized Gains	482	282
Gross Unrealized Losses	(258)	(888)
Estimated Fair Value	42,166	48,230
Commercial Mortgage Backed Securities [Member]
Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities [Line Items]
Amortized Costs	9,942	10,828
Gross Unrealized Gains	45	24
Gross Unrealized Losses	(154)	(380)
Estimated Fair Value	9,833	10,472
Asset-backed Securities [Member]
Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities [Line Items]
Amortized Costs	27,656	29,717
Gross Unrealized Gains	354	388
Gross Unrealized Losses	(277)	(631)
Estimated Fair Value	$ 27,733	$ 29,474